·Boil potato, peel, mash·Chop onion, green chilli, ginger, curry leaves, coriander leaves·Peel, grate the bottle gourd, squeeze excess juice and keep it aside for the curry.·Take the gram flour in a wide mouthed vessel, to it add onion, ginger, curry leaves, coriander leaves, turmeric powder, red chilli powder, salt, mashed potato mix all these and make it into a dough.·Make it into small balls and deep fry in oil and set it aside.